Refrigerator condenser



Oct. 17, 1933.l D F. NEWMAN` 1,931,154

REFRIGERATOR CONDENSER Filed April 28, 1933 ,125 l"nl lhvehtor: l Delbe-t F New/meh bij LVZ/277m His Attovheld.

Patented Oct. 17, 1933 UNITED STATES REFRIGERATOR CONDENSER Delbert F. Newman, Schenectady, N. Y., assignor to General Electric Company, a corporation of New York Application April 28, 1933. Serial No. 668,397

Claims.

My invention relates to air cooled condensers for refrigerating systems.

It is an object of my invention to provide a rugged, highly eflicient and easily manufactured 5 air cooled condenser for refrigerators.

Further objects and advantages of my invention will become apparent as the following description proceeds and the features ,of novelty which characterize my invention will be pointed o out with particularity in the claims annexed to and forming a part of this specification.

For a better understanding of my invention, reference may be had to the accompanying drawing in which Fig. 1 is a side elevation partly in section of a refrigerating machine embodying my invention; and Fig. 2 is a detailed sectional perspective view of the condenser used in Fig.. 1. 4 Referring to the drawing, in Fig. 1 I have shown a household refrigerating unit provided o .With an air cooled condenser embodying my invention. In this unit a motor and compressor are arranged in a casing 10 mounted on a base or cabinet top 11 and an air cooled condenser 12 is supported about the casing 10 on an annulus of heat radiating finsy 13 secured aboutthe casing 10. Gaseous refrigerant is compressed in the casing 1G, flows out through a connection 14 into the condenser Where it is cooled and liquefied, and from whence it flows through a connection 15 to a flow controlling device 16, and a tube 17 into a flooded evaporator 18 suspended below the base l1 on legs 19. The liquid refrigerant is vaporized in the evaporator and is then drawn back to the compressor through a suction tube In accordance with my invention, the condenser 12 is formed of a conduit constructed of a at strip of steel or other suitable metal 21 and a longitudinally indented strip of like material 22 secured together by folding the edges of the strip 21 over the edges of the strip 22. In order to hermetically seal the joint formed by this folding operation against the pressure in the refrigerating system, the joint is brazed.

v4:5 T'he brazing may be accomplished by placing a radial fins. Condenser 12 is wound about this annulus in contact with the outer arcuate portions 13a, and the condenser and annulus are then forced over the casing 10 under pressure in a suitable press, which insures good contact a0 between all surfaces and good heat exchange re lationship between the fins, the casing 10 and the condenser conduit 12. Since the side of the condenser conduit 12 adjacent the surface of the fin structure is at it presents a considerable area of contact between the condenser and the arcuate portions 13a of the heat radiating fins and insures efficient operation of the condenser conduit. In this construction there is little tendency to distort the cross section of the conduit upon pressing the assembled n and conduit assembly on the casing, as the entire arcuate portions 13a of the ns 13 are in contact with the conduit 12 which provides a large supporting surface for the condenser conduit.

From the foregoing it is evident that I have provided an elcient condenser of rugged and easily manufactured construction having a refrigerant conduit providing a large area in heat exchange relation with the heat dissipating"sur 80 faces of the condenser.

AWhile I have shown a particular embodiment of my invention in connection with a compression refrigerating machine, I do not desire my invention to be limited to the particular construction shown and described, and I intend in the appended claims to cover all modifications within the spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. An air cooled condenser for refrigerating systems including an annulus of heat radiating fins having arcuate surfaces extending circumferentially thereof, and a conduit secured thereon, said conduit having a flat side in contact with said arcuate surfaces.

2. An air cooled condenser for refrigerating systems including a plurality of heat radiating fins and a conduit secured thereon, said conduit comprising a flat strip of metal and a longitudinally indented strip of metal secured together at their edges, said flat strip being secured in good heat exchanging relation with said heat radiating fins.

3. An air cooled condenser for refrigerating systems including an annulus of heat radiating fins having arcuate surfaces extending circumferentially thereof, anda conduit secured thereon, said conduit comprising a flat strip of metal and a longitudinally indented strip of metal secured together at their edges, said ilat strip being secured in good heat exchange relation with said arcuate surfaces. n

4. An air cooled condenser for refrigerating systems including a supporting member, an annulus of ns oi zigzag form surrounding said supporting member, and means including a condensing conduit surrounding said fins for retaining them against said supporting Vmember, said conduit having a flat side in contact with said yannulus of ns.

5. An air cooled condenser for refrigerating DELBERT F. 

